Over the weekend, TriMet crews spliced existing electrical wire to allow for the tie-in of the new MAX Orange Line at the Jackson Street terminus of the Portland Transit Mall.

"They thought they had it all worked out," said Roberta Altstadt, a TriMet spokeswoman. "But when they tried to turn on the power this morning, something failed. We're still trying to troubleshoot it to try to figure out what's going on."

Of course, while troubleshooting the problem, power to the Blue and Red lines also went down for about 30 minutes during the morning commute.